METODO PER MISURAZIONE DI DISTANZE E STAZIONE TRASMITTENTE E RICEVENTE PER REALIZZARE TALE METODO.

摘要

In an optical communication system with a passive star coupler, the measurement should not interfere with the operation of other stations. Distance measurement by determining the echo delay. Use other wavelength. System using combined wavelength- and time-division multiplexing. One wavelength is always kept free for measurements if possible. For the measurement, the same data format as that employed during normal operation can be used. Measurement can be continuously repeated unchanged during operation.